The word unsupported is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 21
Highest Scoring Words With Friends™ Play In The Letters unsupported
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Seven Letter Word Alert: (49 words)
deports, detours, duteous, outruns, outsped, outspun, ponders, portend, postern, posture, pounder, pouters, pronest, prudent, punster, punters, purpose, pursued, resound, respond, rodents, rotunds, roundup, snorted, snouted, sounder, sported, spouted, spouter, spurned, spurted, stopped, stopper, support, sutured, tenuous, tonsure, toppers, topspun, trouped, troupes, tuneups, undoers, undrest, unposed, uprouse, uptrend, upturns, usurped